Antenna mounting clamp



Jan. 10, 1950 M. J. BLAUGRUND 2,493,851

ANTENNA MOUNTING CLAMP Filed Aug. 17, 1949' t 2 Sheets-Sheet l M 5 28 Z7 E 29 A 26 21 I5 H FIG. INVENTOR.

MARWN J-.BLAUC1RUND ATTO RNEY;

Jan. 10; 1950 M. J. BLAUGRUND ANTENNA MOUNTING CLAMP 2 Sheets-Sheet 2 Filed Aug. 4 17, 1949 F'ac'a. 5

Flail KW M ma N R V U T Patented Jan. 10, 1 950 T NNA M T NQCILJM? Mervin, Blane-ren shaker H ights, om A pl cation August, 17, 1949. Serial No. 110,7 1

9: Claims. (CL: 2487:2311

The present invention pertains to an antenna mounting device and more particularly to such devices which are especially adapted formounting on corners, such as chimney corners.

Itv is a primaryobject of my invention to pro vide an antennae mounting device which will hold the antennae firmly in position on chimney installations without requiring the use of log screws, expansion belts or the like.

, Another object of my invention is to an antennae mounting elamp of the character described, which has means provided thereon for tensioning a steel strap, as well as means for securing the ends of said strap.

Still another object of myinvention is to pro,- vide a device of the character described, which is simply constructed, yet eificient in operation.

Other objects and advantages of the invention will be apparent during the. course of the follow: ing description.

In the accompanying drawings, forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

Fig. 1 is an elevational view showing the man-.- ner in which a mounting clamp embodying the features of my invention is utilized for a chimneymounted installation.

Fig. 2 is a top plan view of the mounting clamp shown in Fig. 1,. with the parts in non-:clamping position, the strap not being show Fig. 3 is a cross-sectional view taken on line 3-3 of Fig 1.

Fig. 4 is an enlarged fragmentary viewtaken a i icated byline tl on Fi Eig. 5 is an enlarged. fragmentary view taken as ndica ed b ine at 4.

Fig 6 s enla ed fr g en ary view taken as indicated by line 6?6 of Fig. 2.

Fig. 7 is an enlarged fragmentary view taken s ndi d b l e -1 of Fi 2,.

Fig. 8 is a fragme a y to pl n e of a H ndi: ed ier of e in n on- Fig. 9 is an elevational view taken as indicated by ine o i 8- Fi 0 is a f men ar p p an view of an:

other form of the invention.

Fig. 11 is an eievational view taken as indicated byline ll :-|l of Fig. 1Q.

Fig. 12 is a view similar to Fig. 11 of still an: other form of the invention.

Referring more particularly to Figs. 1,-7 of the awing in e- 1 I e i lustrated the manner in which my invention is utilized for mounting n nt n m M n a chimne C, or the like.

. x endin eieheated mea d ihp may as illustrated, to employ two vertically-spaced clamps I thus providing support for the inast M at two spaced'points. The i h lei I .eemrrisee hedv 2 formed f a t i e rh iel i 0 7 the. ike h e e th te me is ro id two s d uhs h llv" al el a ms. 4 which ext at right n e he eehhee hs P03191191 e 5 wh s h e'e eiwit the arms Th arm 4 eh xi r 'ei eh ehel d ht heieh he 6 whi li s et hheh herel l to he We 5 and t d h'e direet h we from. t e arms ,3 nd 4; The extension bar terminates in a short angii e y ext n n e rt eh hieh reieeie n! a d ti n av i emthe b 5 A dihetihe b lt 8,. 9f e reh h e ely t e same l gt s th di he be ween th arms 3 ehs 4 x n th eii h. a c earan e heie c ntrally loca ed in the rhi Th ehd: of the be 8.. is Prov de wi h n .eht hsieh r dowel lie edheed iamete whi h extension, preieete ih q eh+ ihe hre idedih. h 4i A nut I2 is threadedly secured to the bolt ,8 o a to h it th ihhe shrieee hi th e ih 3 if1 ehheeit eh 9 th head l3 Of the belt. hereby firmly securing the bolt'in position between the s nd. 4-, A. strep ee ih mem er .Qr c am h ek M have h s een ra lv i ersed anned ev n It is Although only one used, -it is preferable,

threaded. 9 2129 the elt. i n is ca r e by he he i between the arm ii and 4- Intermedia e the damn hl k ar d th nut 12 s mou d e siren r e v n membe er en:

'- ci element It w i h i rqv d dw th ciieeh enee'hel 1 hr ueh'wh eh he. helm x the. an hor element h ihs i ee v heveble i e the bolt.

- The ehehe ement 1 i th iehh iii an epeh ehded eetehe le he her h in Per-e 9! si es. Hi we erel the h end hr eels Well 20 n w e slee ted-the -eere ee hele H heretofore mentioned. In the use of my inven: hen, the anch r lem nt is e ishe ed that th sides 18 are ert eal and the .eideewar hori: zoh eli ehd if his e her-h in d it williead t9 eieleeser und s and n hi .9 descript on-- .i 'feehe th i. 18

is are id d w h a. vertically Q eh hs. erslq 2! and the. back wall 20 is provided with two vertically ex: te din op nin s or slots 22 which straddlethe nerturezi'l a The sides IQ are each recessed as at 23, which, as will hereinafter-more fully appear, permits easier access to the interior of the anchor element I6.

The clamp block I4 is arcuate in form and is of such dimension as to be received within the anchor element l6. The concave surface 24 of the block faces the anchor element and the edges 25 thereof project forwardly of the face of the block and toward the back wall 20 of the anchor element.

A portion of the web of the body 2 is bent or offset to form a vertically extending V-shaped channel or groove 26 which is adapted to receive the mast M. A complementary channel piece 21 is releasably secured to the body 2 in opposed relationship to the channel 26 by means of bolts 28 and nuts 29. The mast M- may thus be frictionally secured between the piece 21 and theweb 5 by drawing up on the nuts 29.

4 is a circular dished or cupped piece of concaveconvex form which has a centrally located tapped opening 36 extending therethrough. The adjusting bolt 8 threadedly engages the opening 36 in the clamping element.

The anchor element 32 is disposed between the element 33 and the arm 3 and is provided with a centrally located clearance hole 31 through which the screw 8 passes, Two laterally-spaced vertically extending slots 38 are provided in the anchor element 32, one being disposed on each side of the opening 37. The anchor element 32 'is thus freely movable longitudinally of the bolt 8.

. In utilizing this form of the invention, the end I A of the strap S, as heretofore described, is passed through the slot 39 in the body web 5 and thence through oneof the slots 38 in the anchor element '32. The end B of the strap is passed through slot A vertically extending slot is provided in v the web 5 near the arm 4, and a similar slot 3| is provided in the portion 1 of the extension bar 6.

Referring more particular1y to Figs. 1 and 3, I have shown the manner in which a metal strap S is utilized to secure the mounting clamp to the chimney C. I

The mounting clamp is located on a corner of the chimney so that the arm 4 lies against one face of the chimney and the extension bar 6 lies against an adjacent face thereof. The strap S encircles the chimney and one end A thereof is passed through the slot 38 and through the slot 2| in one side l8 of the anchor element 16. The end A then is passed through one of the slots 22 so that it passes completely through the element Hi. I

The other end B of the strap S is passed through slot 3| in the portion '1 of the bar 6 and then is passed through the other slots 2| and 22 in the same manner as the end A. For the sake of clarity, the ends A and B are illustrated as projecting rearwardly from the anchor element 16,.

however, in practice, these ends would be bent back upon themselves after passing through element I6 so that the strap S would be snubbed about the anchor element.

j It will be understood that during this proe cedure, the strap is pulled taut manually insofar as is possible.

The nut |2 is then loosened slightly thereby permitting the adjusting bolt 8 to be turned or rotated. The clampblock M which threadedly engages the bolt 8 is caused to move toward the anchor element l6 by the rotation of the bolt until theedges 25 abut the strap and press it against the wall 28 of element l6. Continued rotation of the bolt causes the element |6 to be forced rearwardly (to the left in Fig. 3), thus tightening the strap and forcing the arm 4 tightly against the surface of the chimney.

When the mounting clamp is thus secured to the chimney, the nut I2 is drawn up to secure the bolt 8 against rotation, and the mast is secured to the mounting clamp in the manner heretofore indicated.

Referring now to Figs. 8-9 of the drawings, I have shown a modified form of the invention in which I utilize an anchor element 32 in lieu of the anchor element l6, and a clamping element 33 instead of the clamp block I4. In all other respects the structure is identical with that of Figs. 1 to '7.

The anchor element 32 is in the form of a short bar having rounded edges 34 which conform to the curvature of the concave face 35 of the clamping element 33. The clamping element line position in Fig. 8.

3| in'the extension l and then through the other slot 38.

. The nut I2 is then loosened permitting the adjusting screw 8 to be, turned thereby causing the clamping element 33 to be drawn toward the anchor element 32 as indicated by the dotted The strap S is gripped between the surface 35 of the clamping element and-the edges 34 of theanchor element. Continued rotation of the screw 8 causes the anchor element to be moved rearwardly (downwardly as viewed in Fig. 8) and increases the tension on the strap S. The clamp assembly is thus frictionally secured to the chimney.

This modified form of the invention, as well as the modifications illustrated in Figs. 10 to 12,

. has an advantage over the form of invention shown in Figs. .1 to 7, in that, misalignment of the clamping element 33 and anchor element 32 cannot occur, as was possible between the clamping block l4 andthe anchor element l6.

In practice it has been found that, through carelessness, the block'l4 may be permitted to go askewso that it will not enter the anchor element .|6 whenit is drawn up. Due to the circular form of clamping element 33, such a condition is obviated in the form of invention illustrated in Figs.

8 and 9.. 1

Referring now more particularly to Figs. 10 and 11, I have shown another modification which, as. heretofore mentioned, has as its objective the avoidance of misalignment of the parts.

In this instance, I utilize a clamp element 39 and an anchor element 49 in lieu of the block l4 and the element l6. In other respects, the structure isidentical with that shown in Figs. 1 to 7.

The anchor element 48 is in the form of a short bar having angularly inclined ends 4| and having a centrally disposed clearance hole 42. Two spaced vertically extending slots 43 are provided in the element 40, one being disposed to each side of the aperture 42. l

The clamping element 39 is a U-shaped member having a web portion 44 from which extend two parallel arms 45, which pass through the slots 43. The ends of arms 45 are bent back at a sharp angle to form gripping edges 46 which are adapted to abut the anchor element 48. The web 44 of clamping element 39 is provided with a centrally located tapped opening 4! which is threadedly engaged by the adjusting screw 8 which also passes through clearance hole 42 in element 48.

The anchor element is thus longitudinally movable'relatively to the screw 8 and hasa limited amount of movement relatively to the clamping sembly, the end A of strap S is passed through slot 38 and thence through one slot 43 outwardly of arm 45 of the clamping element 39. The end B is passed through slot 3| and then through the other slot 43 in anchor element 40. When screw 8 is rotated, the clamp element 39 is moved to the dotted line position shown in Fig. 10 and the strap is gripped between the ends 4| of element 48 and the gripping edges 46 of element 39, thereby securing the strap and tensioning it in the manner heretofore described.

In Fig. 12, I have shown a modification of the form of invention shown in Figs. 10 and 11. This form of the invention obviates certain difficulties in manufacture which may be encountered in producing the embodiment of Figs. 10 and 11.

In this instance the unitary anchor element 4|] is replaced by two like elements 48, each having a slot 49 formed therein, through which an arm 45 of clamping element 39 passes.

The manner of utilizing this form of the invention is the same as heretofore described with reference to Figs. 10 and 11.

From the foregoing description, it will be apparent that I have provided a simple, yet efficient, antenna mounting clamp particularly adapted for chimney installations.

It is to be understood that the forms of my invention, herewith shown and described, are to be taken as preferred examples of the same, and that various changes in the shape, size and arrangement of parts may be resorted to, without departing from the spirit of my invention or the scope of the subjoined claims.

Having thus described my invention, I claim:

1. A strap-secured mounting clamp for aflixation to a chimney or the like, comprising a body, said body having spaced parallel arms extending therefrom, an adjusting screw supported by said arms, a strap anchoring element slidably carried on said adjusting screw, said element having strap-receiving openings therein, a strap clamping element threadedly secured to said adjusting screw, said clamping element having gripping surfaces disposed toward the strap-receiving side of said anchoring element, whereby said anchoring element is engageable by said clamping element in response to rotation of said adjusting screw, and a mast receiving portion provided on said body.

2. In a strap-secured mounting clamp of the character described, the combination of a body, an adjusting screw supported by said body, a strap anchoring element slidably carried by said adjusting screw, said element having strap-receivingapertures therein, and a strap clamping member threadedly engaging said adjusting screw, said member having gripping surfaces disosed toward the strap-receiving side of said element, whereby said gripping surfaces engage said element in response to rotation of said screw to clamp a strap therebetween.

3. A combination, as defined in claim 2, in which said anchoring element comprises a slotted bar having projecting sides and said clamping member is containable within said sides.

4. A combination, as defined in claim 2, in

which said anchoring element comprises a slotted bar and said clamping member comprises a circular element of larger diameter than the largest dimension of said anchoring element.

5. A combination, as defined in claim 2, in which said anchoring element comprises a slotted bar and said clamping element is secured to said bar for movement relatively thereto longitudinally of said screw.

6. In a strap-secured mounting clamp of the character described, the combination of a body, an adjusting screw supported by said body, a strap-anchoring element slidably carried by said adjusting screw, said element having strap-receiving apertures therein, and a strap clamping member threadedly engaging said adjusting screw, said member having gripping surfaces disposed toward said element, whereby to clamp a strap against said element in response torotation of said screw.

7. A strap-secured mounting clamp of the character described, comprising a body, an adjusting screw carried by said body, a strapanchoring element slidably carried by said adjusting screw, said element having portions adapted to engage the end portions of the strap, and a strap-clamping member threadedly secured to said adjusting screw, said member being movable toward said element in response to rotation of said screw in one direction whereby to clamp said end portions of the strap against said element, said element and said member being movable along the screw after clamping the strap to tension the same.

8. A combination, as defined in claim 7, in which a mast-securing clamp is mounted on said body. I

9. A strap-secured mounting clamp for afiixation to a chimney or the like, comprising a body, said body having spaced parallel arms extending therefrom, an adjusting screw supported by at least one of said arms, a strap-anchoring element slidably carried on said adjusting screw, said element having strap-receiving openings therein and a strap-clamping element threadedly secured to said adjusting screw, said clamping element having gripping surfaces disposed toward said anchoring element, whereby said anchoring element is engageable by said clamping element in response to rotation of said adjusting screw to grip a strap therebetween.

' MARVIN J. BLAUGRUND.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PAI'ENTS Number Name Date 1,288,153 Otte Dec. 17, 1918 1,459,856 Otte June 26, 1923 2,107,037 Kippenberg et a1. Feb. 1, 1938 2,482,575 Cohn Sept. 20, 1949 FOREIGN PATENTS Number Country Date 392,545 Great Britain May 16, 1933 

